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beard%netscape.com
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Коммит
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<HTML>
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<HEAD>
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<TITLE>TrivialApplet</TITLE>
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</HEAD>
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<SCRIPT LANGUAGE="JavaScript">
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var System = java.lang.System;
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function writeln(text)
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{
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document.write("<P>", text, "</P>");
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}
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function println(text)
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{
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System.out.println(text);
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}
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function examineApplets()
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{
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var applets = document.applets;
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println("applets.length = " + applets.length);
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}
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function examineTrivialApplet(applet)
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{
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applet.print("url = " + applet.urlField.getText());
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// println("url = " + applet.urlField.getText());
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}
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</SCRIPT>
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<BODY onload="examineApplets();">
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<P>
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<APPLET
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ARCHIVE="AppletClasses.jar"
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NAME="TrivialApplet"
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CODE="TrivialApplet.class"
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MAYSCRIPT="true"
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WIDTH=200 HEIGHT=200>
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<PARAM NAME="URL" VALUE="http://home.netscape.com">
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</APPLET>
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</P>
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<HR>
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<a href="TrivialApplet.java">The source.</a>
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<form>
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<P>
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<input type=button
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onclick="examineApplets();"
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value="examineApplets()">
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<input type=button
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onclick="examineTrivialApplet(document.TrivialApplet);"
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value="examineTrivialApplet()">
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</P>
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</form>
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</BODY>
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</HTML>
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/*
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Trivial applet that displays a string - 4/96 PNL
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*/
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import java.awt.*;
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import java.awt.event.*;
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import java.applet.Applet;
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import java.net.URL;
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import java.net.MalformedURLException;
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import netscape.javascript.JSObject;
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class AboutBox extends Frame {
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AboutBox(Menu aboutMenu, ActionListener[] actionListeners) {
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super("About This Applet");
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addWindowListener(
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new WindowAdapter() {
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public void windowClosing(WindowEvent e) {
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dispose();
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}
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});
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Button okButton = new Button("OK");
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okButton.addActionListener(
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new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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dispose();
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}
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});
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// Annoying use of flow layout managers.
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Panel labelPanel = new Panel();
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Panel buttonPanel = new Panel();
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labelPanel.add(new Label("This applet's about box..."));
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buttonPanel.add(okButton);
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add(labelPanel, "North");
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add(buttonPanel, "Center");
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// test menu bar stuff.
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MenuBar menuBar = new MenuBar();
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aboutMenu = (Menu) cloneMenu(aboutMenu);
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for (int i = 0; i < actionListeners.length; i++)
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aboutMenu.getItem(i).addActionListener(actionListeners[i]);
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menuBar.add(aboutMenu);
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setMenuBar(menuBar);
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pack();
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show();
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}
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private MenuItem cloneMenu(MenuItem oldItem) {
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if (oldItem instanceof Menu) {
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Menu oldMenu = (Menu) oldItem;
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Menu newMenu = new Menu(oldMenu.getLabel());
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int count = oldMenu.getItemCount();
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for (int i = 0; i < count; i++) {
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newMenu.add(cloneMenu(oldMenu.getItem(i)));
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}
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return newMenu;
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} else {
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MenuItem newItem = new MenuItem(oldItem.getLabel());
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return newItem;
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}
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}
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}
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class ExceptionThread extends Thread {
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ExceptionThread() {
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start();
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}
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public void run() {
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throw new Error("this is an error!");
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}
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}
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public class TrivialApplet extends Applet {
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public Button goButton;
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public Button aboutButton;
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public TextField urlField;
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public Menu aboutMenu;
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public ActionListener[] actionListeners;
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private static int appletCount;
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public void init() {
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++appletCount;
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goButton = new Button("Go");
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aboutButton = new Button("About");
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String urlText = getParameter("URL");
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if (urlText == null)
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urlText = "http://www.apple.com";
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urlField = new TextField(urlText);
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ActionListener goListener =
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new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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try {
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URL apple = new URL(urlField.getText());
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getAppletContext().showDocument(apple, "Apple!");
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} catch (MalformedURLException mfue) {
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}
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}
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};
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ActionListener aboutListener =
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new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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new AboutBox(aboutMenu, actionListeners);
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}
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};
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goButton.addActionListener(goListener);
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aboutButton.addActionListener(aboutListener);
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add(goButton);
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add(aboutButton);
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add(urlField);
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// Try a pop-up menu, and a menu in the menubar.
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PopupMenu contextMenu = new PopupMenu();
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aboutMenu = new Menu("About");
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contextMenu.add(newItem("About", aboutListener));
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aboutMenu.add(newItem("About", aboutListener));
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contextMenu.add(newItem("Go", goListener));
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aboutMenu.add(newItem("Go", goListener));
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ActionListener errorListener = new ActionListener() {
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public void actionPerformed(ActionEvent e) {
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new ExceptionThread();
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}
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};
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contextMenu.add(newItem("Error", errorListener));
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aboutMenu.add(newItem("Error", errorListener));
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ActionListener[] listeners = { aboutListener, goListener, errorListener };
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actionListeners = listeners;
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add(contextMenu);
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}
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private MenuItem newItem(String title, ActionListener listener) {
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MenuItem item = new MenuItem(title);
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item.addActionListener(listener);
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return item;
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}
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private Frame getFrame() {
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Component p = this;
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while (p != null && !(p instanceof Frame))
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p = getParent();
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return (Frame)p;
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}
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// public void paint( Graphics g ) {}
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public boolean mouseEnter(Event evt, int x, int y) {
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showStatus("Welcome!");
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return true;
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}
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public boolean mouseExit(Event evt, int x, int y) {
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showStatus("See you later!");
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return true;
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}
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public void print(String message) {
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JSObject window = JSObject.getWindow(this);
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Object[] args = { message };
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window.call("println", args);
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}
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public int getAppletCount() {
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return appletCount;
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}
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}
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@ -0,0 +1,77 @@
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<HTML>
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<HEAD>
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<TITLE>TrivialApplets</TITLE>
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</HEAD>
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<SCRIPT LANGUAGE="JavaScript">
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var System = java.lang.System;
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var println = System.out.println;
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function writeln(text)
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{
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document.write("<P>", text, "</P>");
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}
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function examineApplets()
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{
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var applets = document.applets;
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println("applets.length = " + applets.length);
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}
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function examineTrivialApplet(applet)
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{
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applet.print("url = " + applet.urlField.getText());
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applet.print("appletCount = " + applet.getAppletCount());
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}
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</SCRIPT>
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<BODY>
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<HR>
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<APPLET
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ARCHIVE="AppletClasses.jar"
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NAME="TrivialApplet_0"
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CODE="TrivialApplet.class"
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MAYSCRIPT="true"
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WIDTH=200 HEIGHT=200>
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<PARAM NAME="URL" VALUE="http://home.netscape.com">
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</APPLET>
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<HR>
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<APPLET
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ARCHIVE="AppletClasses.jar"
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NAME="TrivialApplet_1"
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CODE="TrivialApplet.class"
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MAYSCRIPT="true"
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WIDTH=200 HEIGHT=200>
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<PARAM NAME="URL" VALUE="http://www.apple.com">
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</APPLET>
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<HR>
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<P>
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<a href="TrivialApplet.java">The source.</a>
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</P>
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<FORM>
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<INPUT type=button
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onclick="examineApplets();"
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value="examineApplets()">
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<INPUT type=button
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onclick="examineTrivialApplet(document.applets[0]);"
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value="examineTrivialApplet(0)">
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<INPUT type=button
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onclick="examineTrivialApplet(document.applets[1]);"
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value="examineTrivialApplet(1)">
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</FORM>
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</BODY>
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</HTML>
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